Side roller carriage and guide belt with rail for a soft top structure of a vehicle superstructure or a container

The carriage (35) has two rollers (36) running on a running surface (28) of a rail (21). A guiding roller is arranged above the rollers and provided for running on another running surface (30) of the rail. The guiding roller is arranged such that a rotational axis of the guiding roller is arranged non-parallel to a rotational axis of one of the rollers. The guiding roller is oriented towards a vehicle inner side or a container inner side in an operating condition of the carriage. The guiding roller is arranged at a bracket that is arranged at a holding plate. The guiding roller is made from plastic. The holding plate is designed as a metal plate. An independent claim is also included for a guide belt with a rail.